Biomimetic synthetic studies on lactonamycin: an expedient synthesis of dihydroxy-isoindolinone-carboxylates
作者:Sylvain A. Jacques、Bhavesh H. Patel、Anthony G.M. Barrett
DOI:10.1016/j.tetlet.2011.08.173
日期:2011.11
The synthesis of dihydroxy-isoindolinone-carboxylates from a dioxinone keto-ester and N-protected sarcosine without the use of phenolic protection is described. Base-induced aromatization of the dioxinone diketo-ester followed by lactamization furnished the desired dihydroxy-isoindolinone moiety, which could be used as an EF-ring precursor toward the synthesis of lactonamycin. (C) 2011 Elsevier Ltd. All rights reserved.